When General Hammond is shown on a screen talking with Colonel O'Neill, the airman over Hammond's right shoulder is series writer Damian Kindler.
The security forces that meet SG-1 are wearing German camouflage known as Flecktarn.
This episode plot seems to have a connection with Ancient Egyptian History, not only be the name of Horus, but also by the removal of prior history. When Amenophis IV (aka Akhenaton) was killed by Amon's curie, every mention of the "heretic one" was deleted. His name was removed from temples, cartouches, and every construction order by him was destroyed.